_ "Virginia Tech University, the site of the country's worst massacre, is on lockdown after two people, including a police officer, were shot and killed on the campus. The school said the suspect is at large and students are being told, "Stay indoors. Secure in place." An alert on the Virginia Tech school's website said: "There is an active campus alert in Blacksburg. Everyone should seek shelter or stay where you are. Blacksburg Transit service is suspended until the alert is lifted." Virginia Tech spokesman Mark Owczarski said a campus police officer stopped a vehicle shortly after noon today in the school's Coliseum parking lot, near McComas Hall. " - ABC